import 'package:flutter/material.dart';

class SampleApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    print("1");
    return new Container(
      child: new GestureDetector(
        child: new FlutterLogo(
          size: 300.0,
        ),
        onTap: () {
          print("tap");
        },
        onVerticalDragDown: (detail)=>print("down"),
      ),
    );
  }
}
